diff --git a/libavcodec/x86/cabac.h b/libavcodec/x86/cabac.h
index ae3f4b6e9e..545cf7c464 100644
--- a/libavcodec/x86/cabac.h
+++ b/libavcodec/x86/cabac.h
@@ -67,7 +67,7 @@
         "test   "lowword"   , "lowword"                                 \n\t"\
         " jnz   1f                                                      \n\t"\
         "mov "byte"("cabac"), %%"REG_c"                                 \n\t"\
-        "add    $2          , "byte    "("cabac")                       \n\t"\
+        "add"OPSIZE" $2     , "byte    "("cabac")                       \n\t"\
         "movzwl (%%"REG_c")     , "tmp"                                 \n\t"\
         "lea    -1("low")   , %%ecx                                     \n\t"\
         "xor    "low"       , %%ecx                                     \n\t"\
diff --git a/libavcodec/x86/h264_i386.h b/libavcodec/x86/h264_i386.h
index eb77002ce0..f32310ca0c 100644
--- a/libavcodec/x86/h264_i386.h
+++ b/libavcodec/x86/h264_i386.h
@@ -67,7 +67,7 @@ static int decode_significance_x86(CABACContext *c, int max_coeff,
         "test $1, %4                            \n\t"
         " jnz 4f                                \n\t"
 
-        "add  $4, %2                            \n\t"
+        "add"OPSIZE"  $4, %2                    \n\t"
 
         "3:                                     \n\t"
         "add  $1, %1                            \n\t"
@@ -125,7 +125,7 @@ static int decode_significance_8x8_x86(CABACContext *c,
         "test $1, %4                            \n\t"
         " jnz 4f                                \n\t"
 
-        "add  $4, %2                            \n\t"
+        "add"OPSIZE"  $4, %2                    \n\t"
 
         "3:                                     \n\t"
         "addl $1, %k6                           \n\t"